Table 1.

Predicted amino-acid identity (%) of BN-like peptide receptor subtypes

	BB4	BRS-3.5	BRS-3					GRP-R				NMB-R
	fr	Chick	mo	ra	gp	sh	hu	Chick	mo	ra	hu	mo	ra	hu
ChGRP-R	60	60	59	60	61	60	63	—	80	80	82	60	60	60
ChBRS-3.5	74	—	67	67	66	68	69	60	58	59	58	52	52	52

Receptor sequences have been reported as follows: Frog (fr) BB4 (Nagalla et al., 1995), mouse (mo) BRS-3 (Ohki-Hamazaki et al., 1997a), rat (ra) BRS-3 (Liu et al., 2002), guinea pig (gp) BRS-3 (Gorbulev et al., 1992), sheep (sh) BRS-3 (Whitley et al., 1999), human (hu) BRS-3 (Fathi et al., 1993), mouse GRP-R (Spindel et al., 1990), rat GRP-R (Wada et al., 1992), human GRP-R (Corjay et al., 1991), mouse NMB-R (Ohki-Hamazaki et al., 1997a), rat NMB-R (Wada et al., 1991), human NMB-R (Corjay et al., 1991).